Table 4

Summary statistics for life table analysis of survival of patients with idiopathic pulmonary fibrosis (IPF) in the New Mexico ILD Registry

FactorCategoryNo.Five year survival (95% CI)p value for log rank test
Age at diagnosisUnder 65 years 4768.8 (55.0 to 82.6)
65–74 years 7050.7 (38.4 to 63.0)
75 years or older 9234.5 (23.6 to 45.3)0.001
Chest radiographic profusionMild 6853.0 (39.5 to 66.4)
Moderate 4548.6 (33.2 to 64.0)
Severe 2423.8 (6.3 to 41.3)0.008
FVC (% predicted)4-150 >80 3855.6 (36.9 to 74.4)
60–80 5949.1 (35.2 to 63.2)
<60 4633.7 (18.2 to 49.2)0.124
FEV1 (% predicted)>80 5356.1 (41.4 to 70.8)
60–80 4950.5 (35.6 to 65.4)
<60 4137.4 (20.8 to 54.1)0.103
AirflowNormal 5356.1 (41.4 to 70.8)
Obstructed 3346.1 (26.6 to 65.5)
Restricted 5743.3 (29.7 to 56.9)0.417
Duration of symptoms prior to diagnosis<12 months15250.0 (36.5 to 53.5)
⩾12 months 2170.7 (50.9 to 90.5)0.028
SexWomen 9447.6 (36.8 to 58.4)
Men11547.5 (37.5 to 57.5)0.915
SmokingNever smoked 5944.1 (30.9 to 57.3)
Ever smoked12850.3 (40.6 to 60.0)0.250
Ethnic groupHispanic 4839.9 (25.5 to 54.2)
Non-Hispanic White12851.2 (41.7 to 60.8)0.139
CorticosteroidsNot treated11452.7 (43.0 to 62.3)
Treated 7641.6 (29.5 to 53.8)0.292
Diagnostic code (ICD-9)IPF (516.3)12946.4 (37.0 to 55.8)
Pulmonary fibrosis (515) 5642.1 (28.2 to 56.0)
Primary or interstitial pneumonitis 2466.7 (47.8 to 85.5)0.113
BiopsyTransbronchial 6852.9 (40.1 to 65.7)
Open lung/autopsy 2044.0 (18.0 to 70.0)
No biopsy11645.8 (36.1 to 55.5)0.526
  • 4-150  Comparison between % predicted FVC <60 and % predicted FVC >60, p value = 0.044.